The Netflix TechBlog

SEPTEMBER 8, 2020

This allows the app to query a list of “paths” in each HTTP request, and get specially formatted JSON (jsonGraph) that we use to cache the data and hydrate the UI. To prepare ourselves for a big change in the tech stack of our endpoint, we decided to track metrics around the time taken to respond to queries.

Latency 233

Latency Cache Java Traffic 233

Smashing Magazine

JANUARY 11, 2021

LogRocket tracks key metrics, incl. Getting Ready: Planning And Metrics Performance culture, Core Web Vitals, performance profiles, CrUX, Lighthouse, FID, TTI, CLS, devices. Networking, HTTP/2, HTTP/3 OCSP stapling, EV/DV certificates, packaging, IPv6, QUIC, HTTP/3. Getting Ready: Planning And Metrics. Table Of Contents.

Performance 145

Performance Cache Media Metrics 145

CSS Wizardry

AUGUST 7, 2019

However, one metric I feel that front-end developers overlook all too quickly is Time to First Byte (TTFB). Armed with this knowledge, we can soon understand why TTFB can often increase so dramatically on mobile. Surely, you’ve wondered before, the server has no idea that I’m on a mobile device—how can it be increasing its TTFB?!

Latency 269

Latency Ecommerce Servers Mobile 269

Dynatrace

APRIL 21, 2022

Most monitoring tools for migrations, development, and operations focus on collecting and aggregating the three pillars of observability— metrics, traces, and logs. Using a data-driven approach to size Azure resources, Dynatrace OneAgent captures host metrics out-of-the-box to assess CPU, memory, and network utilization on a VM host.

Azure 184

Azure Monitoring Virtualization Metrics 184

Alex Russell

MARCH 6, 2021

Thanks to progress in networks and browsers (but not devices), a more generous global budget cap has emerged for sites constructed the "modern" way: ~100KiB of HTML/CSS/fonts and ~300-350KiB of JS (compressed) is the new rule-of-thumb limit for at least the next year or two. Modern network performance and availability.

Performance 124

Performance Network Cache Metrics 124

MachMetrics

JUNE 30, 2021

Ever since Google is switching towards “ mobile fast indexing ” it’s very important for a webmaster to keep the pages very well optimized to maintain visitor’s + search engine’s satisfaction level high. Yet 53% of visits are abandoned if a mobile site takes longer than three seconds to load. seconds on mobile devices.

Cache 78

Cache Speed Google Website 78

CSS - Tricks

APRIL 1, 2021

Site performance is potentially the most important metric. Speed is also something Google considers when ranking your website placement on mobile. Having a slow site might leave you on page 452 of search results, regardless of any other metric. In DevTools, the Network inspector helps us see what the first webpage is doing too.

Cache 92

Cache Social Media Media Website 92

Tim Kadlec

JUNE 21, 2022

The TLS + QUIC layer makes UDP safer to use, but a lot of networks will likely still block for awhile. The RSVP problem: HTTP/3 might be blocked on the network or may not be enabled on the server. The browser stores alt-svc info in alt-svc cache. Google Search with QUIC: p90 went down 6% on desktop, 5% on mobile.

Network 64

Network Mobile Google Cache 64

Smashing Magazine

JULY 18, 2022

If users have a slow network or a slow computer, they will see an ugly loader while their joke is being downloaded. Remember that most visitors browse via a mobile device! The “stale-while-revalidate” cache control strategy can reduce the TTFB issue by serving a cached version of the page until it’s updated.

Cache 114

Cache Website Energy Servers 114

Smashing Magazine

JANUARY 6, 2020

Getting Ready: Planning And Metrics. Getting Ready: Planning And Metrics. You need a business stakeholder buy-in, and to get it, you need to establish a case study, or a proof of concept using the Performance API on how speed benefits metrics and Key Performance Indicators ( KPIs ) they care about. Table Of Contents. Quick Wins.

Performance 145

Performance Cache Network Metrics 145

Smashing Magazine

JULY 29, 2019

Many of us are lucky enough to be on mobile plans which allow several gigabytes of data transfer per month. Failing that, we are usually able to connect to home or public WiFi networks that are on fast broadband connections and have effectively unlimited data. The Cost Of Mobile Data. For reference, the metric is $1.19

Cache 96

Cache Google Mobile Network 96

Smashing Magazine

NOVEMBER 17, 2022

Mobile image transfer size by year graphic from Media, Images, Web Almanac 2021 chapter. Images are crucial elements for performance and UX, and data extracted from Core Web Vitals metrics such as Largest Contentful Paint , which attempts to identify the most important piece of the above-the-fold content on a given page, proves this.

Media 105

Media Cache Website Mobile 105

Smashing Magazine

JANUARY 7, 2019

Getting Ready: Planning And Metrics. Getting Ready: Planning And Metrics. You need a business stakeholder buy-in, and to get it, you need to establish a case study on how speed benefits metrics and Key Performance Indicators ( KPIs ) they care about. Table Of Contents. Setting Realistic Goals. Defining The Environment.

Performance 103

Performance Cache Metrics Network 103

Smashing Magazine

JUNE 2, 2021

This Lighthouse mobile report for the front page showed that a lot of work needed to be done. And while you can usually cache the full page of an article, the same is not true of many shop pages and elements. This way, the file can be cached on the server and in the browser, and no superfluous SVGs will need to be interpreted.

Performance 115

Performance Cache Website Mobile 115

Smashing Magazine

MARCH 7, 2022

This is helpful for those on poor or expensive networks, so they don’t have to pay an exorbitant cost just to visit your website. Approximately two-thirds of Indian mobile Chrome users of Smashing Magazine have this setting turned on, for example. Mobile user. Mobile SaveData support. Mobile SaveData on.

Website 103

Website Media Mobile Network 103

Smashing Magazine

MAY 17, 2021

This is a screenshot from our mobile Core Web Vitals report in Google Search Console. There are three Core Web Vitals metrics that Google will use to help rank sites in their upcoming search algorithm update. A 75th percentile (p75) metric strikes a reasonable balance for performance goals. We still have a lot of work to do!

Google 93

Google Analytics Serverless Metrics 93

CSS - Tricks

JULY 25, 2019

Last year, Google made two significant changes to their search indexing and ranking algorithms : In March, indexing became based on the mobile version of a page , rather than desktop. In July, the SEO ranking algorithm was updated to include page speed as a ranking factor for both mobile pages and ads. Cache-Headers missing?

Google 71

Google Engineering Speed Mobile 71

Smashing Magazine

JANUARY 16, 2023

Largest Contentful Paint (or LCP) is one of three metrics of the Core Web Vitals. These metrics are used by Google to evaluate the quality of user experience. The images used in the article’s Codepen demonstrations will be integrated with TwicPics to save time in their creation and speed up the optimization of the LCP metric.

Media 104

Media Mobile Website Metrics 104

Smashing Magazine

APRIL 29, 2022

Performance needs to be built in starting at the code level, and user-centric metrics like time to interactive (TTI), total blocking time (TBT), and first input delay (FID) help you gauge how fast a website is. This dramatically improved performance, with a 100 ⁄ 100 Google Lighthouse score on PageSpeed Insights even on mobile.

Website 80

Website Google Open Source Mobile 80

Smashing Magazine

JANUARY 21, 2021

Image source: Lighthouse Metrics ) ( Large preview ). Plus a service worker that caches all static assets and serves them for repeat views, along with cached versions of articles that a reader has already visited. This is where we started. As it happened, we lost track of performance in the busyness of day-to-day routine.

Performance 145

Performance Cache Mobile Network 145

MachMetrics

JANUARY 23, 2020

Some visitors will be coming to your site via a blazing fast internet on an overpowered, flagship mobile device. The website hasn’t had any changes made to it, (it’s a personal site I haven’t updated in some time), and you can see how each individual metric varies. The trend is your friend.

Speed 62

Speed Testing Website Cache 62

Smashing Magazine

JUNE 1, 2022

In this case, we are not going to be talking about infrastructure services, such as a cloud computing platform like Microsoft Azure or a content distribution network like Akamai. of mobile sites and 94.1% of requests on mobile and 45.1% And JavaScript can certainly make requests for additional network resources.

Website 131

Website Design Network Best Practices 131

Smashing Magazine

APRIL 29, 2021

Lazy-load offscreen images (reduce network contention for key resources). For low impact to First Input Delay : Avoid images causing network contention with other critical resources like CSS and JS. Cumulative Layout Shift (CLS, a Core Web Vitals metric) measures the instability of content. Large preview ). Large preview ).

Media 145

Media Network Metrics Mobile 145

Jos

JUNE 2, 2018

One could argue this is a metric-driven decision. Simulate bad network conditions and slow CPUs and make your project resilient. How would you architecture a non-trivial size web project (client, server, databases, caching layer)? Lots of case studies where changes in performance led to key metric improvement.

Performance 237

Performance Speed Google Media 237

Alex Russell

OCTOBER 22, 2017

We constrain ourselves to a real-world baseline device + network configuration to measure progress. Budgets are scaled to a benchmark network & device. This helps support executive sponsors who then have meaningful metrics to point to in justifying the investments being made. Partner meetings are illuminating.

Performance 68

Performance Benchmarking Network Mobile 68

Smashing Magazine

NOVEMBER 2, 2021

But many, including Gartner , believe that PWAs are the future of mobile sales that’ll overtake the market in the 2020s: “Progressive web apps are a cost- and a skills-effective way to reach a wide audience with a close-to-native app experience that supports the full customer life cycle. What Does This Mean? Image credit: Garten-und-Freizeit.

Code 74

Code Cache Retail Mobile 74

The Netflix TechBlog

JUNE 14, 2023

We migrated Netflix’s mobile apps to GraphQL with zero downtime, which involved a total overhaul from the client to the API layer. Until recently, an internal API framework, Falcor , powered our mobile apps. And we definitely couldn’t replay test non-functional requirements like caching and logging user interaction.

Traffic 353

Traffic Latency Cache Metrics 353

Dotcom-Montior

JUNE 30, 2021

With the networks all around the world, theoretically, you can do business boundlessly. There are only three landing stations of submarine cables to provide network services to nearly 1 billion Internet users in China. Luckily, the time was shortened to within five seconds when accessing in a cached mode. First Visit.

Website 52

Website Monitoring Website Performance Performance 52

Alex Russell

APRIL 29, 2021

Another window into this question is provided by the Web Confluence Metrics project. Real-time network protocols for enabling videoconferencing, desktop sharing, and game streaming applications. Critical in adapting web content to mobile, particularly regarding multi-touch gestures. Converging Views. Delayed five years.

Media 145

Media Games Education Engineering 145

Dotcom-Montior

JULY 7, 2020

With the networks all around the world, theoretically, you can do business boundlessly. There are only three landing stations of submarine cables to provide network services to nearly 1 billion Internet users in China. Luckily, the time was shortened to within five seconds when accessing in a cached mode. First Visit.

Website 52

Website Monitoring Website Performance Performance 52

Dotcom-Montior

JUNE 30, 2020

With the networks all around the world, theoretically, you can do business boundlessly. There are only three landing stations of submarine cables to provide network services to nearly 1 billion Internet users in China. Luckily, the time was shortened to within five seconds when accessing in a cached mode. First Visit.

Website 52

Website Monitoring Website Performance Performance 52

Jos

JUNE 2, 2018

One could argue this is a metric-driven decision. Again, it’s easy to fake performance optimization by leaving out the bad metrics, blocking users who spoil the stats. Simulate bad network conditions and slow CPUs and make your project resilient. Lots of case studies where changes in performance led to key metric improvement.

Performance 130

Performance Speed Google Media 130

Smashing Magazine

NOVEMBER 22, 2021

Six years ago, over 70% of sessions for Wix websites originated from desktops, with under 30% coming from mobile devices. Since then the situation has flipped, and now over 70% of sessions originate on mobile. Back in 2018 Google announced that sites with especially slow pages on mobile would be penalized. Google search ranking.

Website 126

Website Performance Google Media 126

Rigor

SEPTEMBER 3, 2019

According to Rich Howard, CEO of Optimal, a business dedicated to optimizing websites and mobile apps , there are ten steps your business can take now to start preparing your website or web application for the upcoming holiday season. Ultimately, the key to surviving a peak event is to have very good CDN cache designs.

Website 74

Website Cache Ecommerce Traffic 74

Smashing Magazine

AUGUST 30, 2021

If the stylesheet file has a large file size or multiple dependencies which are located on third-party servers or CDNs, website rendering can be delayed significantly depending on the network speed and reliability. Largest Contentful Paint (LCP) has become an important metric in the last few months. Caching Stylesheets.

Media 108

Media Performance Cache Strategy 108

The Netflix TechBlog

JULY 1, 2019

Some of the metrics we use to measure performance on the Netflix TV app include animation frames per second (FPS), key input responsiveness (the amount of time before a member’s key press renders a change in the UI), video playback speed, and app start-up time. The majority of legacy devices run at 28MB of surface cache.

Cache 166

Cache Design Testing Development 166

Highly Scalable

AUGUST 20, 2013

High performance and mobility. The whole point of this section is that all the algorithms above can be naturally implemented using a message passing architectural style i.e. the query execution engine can be considered as a distributed network of nodes connected by the messaging queues. Interoperability with Hadoop. Pipelining.

Big Data 154

Big Data Processing Lambda Database 154